Maybe just a screenshot would suffice? I assume it is weird looking lines of different textures swapping around as you move? Generally that's what is called Z-Fighting, which is when two brushes are flush with each other and their textures are fighting each other.

Maybe just a screenshot would suffice? I assume it is weird looking lines of different textures swapping around as you move? Generally that's what is called Z-Fighting, which is when two brushes are flush with each other and their textures are fighting each other.

I've already solved this issue. I removed the brush then applied texture to all surfaces.

EDIT: Instead of making a new thread, I want to ask this problem I have. Whenever I run my map, it's pitch black. But whenever I move around my HUD, that will be stuck to the pitch darkness. How do I fix this? I have 4 light entities (for each corner).

I've already solved this issue. I removed the brush then applied texture to all surfaces.

EDIT: Instead of making a new thread, I want to ask this problem I have. Whenever I run my map, it's pitch black. But whenever I move around my HUD, that will be stuck to the pitch darkness. How do I fix this? I have 4 light entities (for each corner).

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Sounds like you don't have spawn point on the map and you are spawning in the void.